Hey Aaron, you were spot on with your guess. Renaming the subclass to noevalexp solves the issue. You rock!!!!!
On 20 September 2013 04:02, Aaron Meurer <[email protected]> wrote: > I can only guess at what's happening, but does it work if you don't > name the class "exp"? There is (unfortunately) a global class registry > in SymPy that uses the name of the class, so a subclass called "exp" > might inadvertently override exp for other parts of SymPy. > > If this is the issue, you can always call the class something like > UnevaluatedExp, and then put "exp = UnevaluatedExp" at the end of the > definition for convenience (or always import it as "from module import > UnevaluatedExp as exp"). The important thing is the __name__ of the > class. > > Of course, we really should get rid of the class registry. But it > hasn't been done yet. > > Aaron Meurer > > On Wed, Sep 18, 2013 at 11:51 PM, Ben Lucato <[email protected]> wrote: > > I know this is looking back a month or two, but I have just started to > use > > your idea about subclassing. > > > > However, it is having unintended side effects. > > > > Including the code: > > > > class exp(sympy.exp): > > @classmethod > > def eval(cls, arg): > > return > > > > in a module like noevals.py, and then subsequently importing noevals has > > disabled eval in the regular sympy.exp. I am super new to subclassing in > > general, but I know it's this code because when I delete these 4 lines > the > > problem goes away. How do I retain this subclass without altering the > > parent's behaviour? > > > > -- > > You received this message because you are subscribed to the Google Groups > > "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > To post to this group, send email to [email protected]. > > Visit this group at http://groups.google.com/group/sympy. > > > > For more options, visit https://groups.google.com/groups/opt_out. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "sympy" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sympy/zilEXwN26so/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > -- Ben Lucato ---------------------------------------------------------------------------------- Phone: +61 400 159 632 | Email: [email protected] -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
